GB855489A - Isolation of dimethyl phenol - Google Patents
Isolation of dimethyl phenolInfo
- Publication number
- GB855489A GB855489A GB1390359A GB1390359A GB855489A GB 855489 A GB855489 A GB 855489A GB 1390359 A GB1390359 A GB 1390359A GB 1390359 A GB1390359 A GB 1390359A GB 855489 A GB855489 A GB 855489A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phenol
- fraction
- coal tar
- dimethyl phenol
- sodium hydroxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/005—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by obtaining phenols from products, waste products or side-products of processes, not directed to the production of phenols, by conversion or working-up
- C07C37/007—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by obtaining phenols from products, waste products or side-products of processes, not directed to the production of phenols, by conversion or working-up from the tar industry
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A process for obtaining 3 : 5-dimethyl phenol comprises selectively crystallizing this material in the form of its sodium salt from a solution of a coal tar fraction containing the same in a non-polar organic solvent, e.g. an aromatic hydrocarbon such as naphtha or xylole. Preferably only a portion of the phenolic material present in the coal tar phenol fraction is converted to the sodium salt. The latter may be formed by adding hot concentrated aqueous sodium hydroxide to the heated phenol fraction, preferably only sufficient sodium hydroxide being employed to form the sodium salts of one half of the substituted phenolic material present. Examples are furnished.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1390359A GB855489A (en) | 1959-04-23 | 1959-04-23 | Isolation of dimethyl phenol |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1390359A GB855489A (en) | 1959-04-23 | 1959-04-23 | Isolation of dimethyl phenol |
Publications (1)
Publication Number | Publication Date |
---|---|
GB855489A true GB855489A (en) | 1960-11-30 |
Family
ID=10031470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1390359A Expired GB855489A (en) | 1959-04-23 | 1959-04-23 | Isolation of dimethyl phenol |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB855489A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996001243A1 (en) * | 1994-07-01 | 1996-01-18 | Archimica S.P.A. | Propofol purification |
-
1959
- 1959-04-23 GB GB1390359A patent/GB855489A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996001243A1 (en) * | 1994-07-01 | 1996-01-18 | Archimica S.P.A. | Propofol purification |
US5696300A (en) * | 1994-07-01 | 1997-12-09 | Archimica Spa | Propofol purification |
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